This Mazda Competition Parts Single Sheave Alternator Pulley reduces alternator RPM approximately 20% from stock for street high-performance and racing use. For use on virtually all 1974-8-92 12A and 13B rotary engines, this aluminum underdrive pulley (3....

Racing Beat's Single Sheave Main Pulley for virtually all 1974-92 12A and 13B engines reduces the water pump/alternator drive ratio substantially to avoid water pump cavitation and alternator damage due to the extreme RPMs encountered in racing. This ...

The Racing Beat-designed Double Sheave Aluminum Alternator Pulley reduces alternator RPM approximately 20% from stock RPM, and is intended for high performance and moderate race use. It is compatible with either the stock main pulley, or assuming you are ...

The Racing Beat Aluminum Double Sheave Main Drive Pulley for virtually all 1974-92 12A and 13B engines is designed for high performance/RPM street and moderate racing use, slowing the water pump and alternator 13-15 %, thereby reducing cavitation and ...

The Racing Beat performance silicone radiator hose kit for the 1979-82 RX-7 is designed to withstand the harsh operating conditions of the rotary engine. The stock rubber hoses can eventually weaken over time, leading to premature failure. Every Racing ...

The Racing Beat performance silicone radiator hose kit for the 1983-85 RX-7 is designed to withstand the harsh operating conditions of the rotary engine. The stock rubber hoses can eventually weaken over time, leading to premature failure. Every Racing ...

The Racing Beat performance silicone radiator hose kit for the 1984-85 RX-7 is designed to withstand the harsh operating conditions of the rotary engine. The stock rubber hoses can eventually weaken over time, leading to premature failure. Every Racing ...

We strongly recommend the Rotor Housing Water Jacket Modification to improve cooling in the hot zone of the rotor housing, thereby increase both rotor housing and apex seal life. This modification involves cutting grooves in the water jacket in the ...

This Heater-Water-Outlet Plug is an inexpensive and reliable way to plug the heater water outlet port on the rear rotor housing for those who do not use a heater. The 1981 and earlier rotary engines had a threaded fitting for the water outlet that accepts...

Royal Purple Ice(company link) is a high performance, synthetic, radiator coolant additive for both gasoline and diesel engines. It is formulated to reduce the surface tension of the coolant, which improves heat transfer through the cooling system while ...